JP3175997B2 - Control terminal for remote monitoring and control system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control terminal of a remote monitoring control system whose operation is controlled by control data generated based on operation data from an operation terminal.

[0002]

2. Description of the Related Art Heretofore, there has been provided a load control system in which a load of a lighting fixture or the like is controlled using such a control terminal. For example, as shown in FIG.
A plurality of operation terminals 23 for monitoring the operation state of the switch S and a plurality of control terminals 24 for controlling the load L or the remote control breaker 31 for load control are formed by a two-wire transmission line Ls. There is known a remote monitoring control system connected to a transmission processing device 25 via a remote control. Individual addresses are set in the operation terminal 23 and the control terminal 24, respectively, and the transmission processing device 25 uses the addresses to individually recognize the operation terminal 23 and the control terminal 24.

[0005] The transmission processing device 25 transmits a signal to the transmission line Ls.
The transmission signal Vs having a format as shown in FIGS.
Is sent. That is, the transmission signal Vs includes a start pulse ST indicating the start of signal transmission, a mode data signal MD indicating a signal mode, and an address data signal transmitting address data for individually calling the operation terminal 23 and the control terminal 24. AD, load L and remote control breaker 31
A control data signal CD for transmitting control data for controlling
Checksum data signal C for detecting transmission error
S, a bipolar (± 24V) time-division multiplexed signal comprising a signal return period WT which is a time slot for receiving a return data signal from the operation terminal 23 or the control terminal 24, Is transmitted.

In each of the operation terminals 23 and the control terminals 24, when the address data transmitted by the transmission signal Vs received via the transmission line Ls matches the address data set in advance, the transmission signal Vs And the return data as a current mode signal (a signal transmitted by short-circuiting the transmission line Ls via a suitable low impedance) in synchronization with the signal return period WT of the transmission signal Vs. I will send it back.

[0005] The transmission processing device 25 is provided with a dummy signal transmitting means and an interrupt signal processing means. The dummy signal transmitting means always transmits a dummy transmission signal in which the mode data signal MD is set to the dummy mode. Further, the interrupt signal processing means, when receiving an interrupt signal Vi as shown in FIG. 8C generated in response to the operation of the switch S in any of the operation terminals 23, generates the interrupt signal Vi. And retrieves the address data set in the operation terminal 23 as return data (operation data). In other words, the dummy transmission signal is normally transmitted to the transmission line Ls by the dummy signal transmission means, and the interrupt signal Vi generated from the operation terminal 23 in accordance with the operation of the switch S is synchronized with the start pulse signal ST of the dummy transmission signal. And the transmission processing device 2
5 from the mode data signal M by the interrupt processing means.
D is the address confirmation mode, and the transmission signal Vs is the transmission line L
s. Each operation terminal 23 sets an interrupt flag for requesting an interrupt when an interrupt signal Vi is generated. In the operation terminal 23 in which the interrupt flag is set, the mode data signal MD is set to the transmission signal Vs in the address confirmation mode. Is received, address data set in the operation terminal 23 is returned as return data (operation data) in synchronization with the signal return period WT of the transmission signal Vs. In this manner, the transmission processing device 25 can acquire the address of the operation terminal device 23 that has generated the interrupt signal Vi.

In the transmission processing device 25, an interrupt signal Vi
When the address of the operation terminal device 23 that has generated
In addition to generating control data to be transmitted to the control terminal 24 connected to the load L in which the correspondence relationship with the switch S is set in advance, a transmission signal Vs including the control data is transmitted to the transmission line Ls, and the corresponding control signal is transmitted. Terminal 2
4 to control the load L or the remote control breaker 31 for load control.

[0007] In the operation terminal 23 and the control terminal 24, the transmission signal Vs transmitted through the transmission line Ls, respectively.
Is stabilized by full-wave rectification to obtain a power supply for operating the internal circuit. A power source is separately provided for the load L connected to the control terminal 24.

[0008]

As shown in FIGS. 9 (a) through 9 (c), the control terminal as described above has a printed circuit board in which terminal circuit components are mounted inside a substantially box-shaped body 26. On the surface of the body 26, a screw-type terminal 27 for connecting a transmission line or a load, an address setting switch 12 including a dip switch 12a, and a load number setting switch 22 also including a dip switch 22a are provided. Is provided. The control terminal 28 shown in FIG.
Although one screw type terminal 27 for connecting a load is for one load control, the control terminal 29 shown in FIGS. 10A to 10C has four terminals 27 for connecting the load. This is for a certain 4-load control. In addition, these control terminals 2
8 and 29 are each formed in a size corresponding to two modules having a common size of a distribution board.

By the way, in the above configuration, when controlling a lighting fixture attached to a pole or the like and installed outdoors, as shown in FIG. A control terminal 28 and a remote-controlled breaker 31 that is turned on / off by controlling the lighting of the lighting equipment by the control output of the control terminal 28 are provided. There is a problem that the terminal circuit component enters the inside of the terminal device 28 and adheres to the printed circuit board on which the terminal circuit component is mounted, short-circuits the terminal circuit on the printed circuit board, and breaks the terminal circuit component.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and to improve reliability by preventing moisture from entering into the interior due to rainwater or dew condensation even when installed outdoors, thereby improving reliability. It is intended to provide a control terminal for a control system.

[0011]

According to a first aspect of the present invention, an operation terminal and a control terminal each having an address are transmitted through a two-wire transmission line. The transmission processing device is connected to the device in a time division multiple access system, and the transmission processing device individually accesses the operation terminal and the control terminal by transmitting a transmission signal including address data to the transmission line, and synchronizes with the transmission signal. Control data is generated based on the operation data when operation data is received from the operation terminal during the set signal return period, and the correspondence between the operation terminal that generated the operation data and the address is set in advance. facing used in the remote monitoring control system for controlling the operation of the operation terminal unit by transmitting the control data to use the terminal device, the internal body which is formed into a substantially box-shaped having an opening in the opening Specifications on the bottom side and the opening side of the body that
Provide a partition plate for cutting, and place a pre-cut in the space between the partition plate and the opening.
The printed circuit board is stored and fixed, and the space between this partition plate and the opening is
It is characterized in that the resin is filled in the place and the opening is closed with a cover.

[0012] invention of claim 2 is the invention of claim 1, characterized by comprising constitutes a connecting portion connecting the connecting portion and the transmission line connecting the load control object in the lead.

[0013]

According to the configuration of the first aspect of the present invention, an operation terminal and a control terminal each having an address are connected to a transmission processing device via a two-wire transmission line by a time division multiple access system.
The transmission processing device individually accesses the operation terminal and the control terminal by transmitting a transmission signal including address data to the transmission line, and operates the operation terminal during a signal return period set in synchronization with the transmission signal. When the operation data is received, the control data is generated based on the operation data, and the control data is transmitted to the control terminal in which the correspondence between the operation terminal that generated the operation data and the address is set in advance. Is used in a remote monitoring and control system that controls the operation of the operation terminal by opening the inside of a body that has an opening and is formed in a substantially box shape.
Provide a partition plate at the mouth and between the partition plate and the opening.
The printed circuit board is stored and fixed in the space
The resin is filled into the space between the unit and the opening and the opening is sealed with a cover, so the printed circuit board is waterproof and dampproof with the resin, and even when used outdoors, the terminal mounted on the printed circuit board by rainwater or condensation It is possible to prevent circuit components from short-circuiting , and between the partition plate and the opening.
Is filled only with resin so that the amount of resin
Promises it Ru can.

[0014]

In the configuration according to the second aspect of the present invention, the connecting part for connecting the load to be controlled and the connecting part for connecting the transmission line are constituted by lead wires, so that the connection is made when the control terminal is installed outdoors. It is possible to prevent a short circuit between the units due to dew condensation.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Before describing the embodiments of the present invention, the
A basic example having a common basic configuration will be described. this
The control terminal 1 of the basic example is shown in FIGS.
As shown in (c), a terminal board part for four-load control is provided inside a resin body 3 formed in one dimension of a distribution board agreement size module having an opening 2 and formed in a substantially box shape. (Not shown) mounted and fixed printed circuit boards 4 to 6,
The opening 2 of the body 3 is closed by a cover 7.

As shown in FIG. 1, a pair of side surfaces inside the body 3, which are opposed to each other in the longitudinal direction of the body 3,
A pair of ridges 8 are provided along the side surface in parallel with the direction from the opening 2 to the bottom surface facing the opening 2. The printed circuit board 4 is housed and fixed inside the body 3 by inserting both ends in the longitudinal direction of the printed circuit board 4 into the grooves 9 formed between the pair of protrusions 8. Further, a terminal pin hole 4a is provided at an end of the printed circuit board 4 on the side of the opening 2 in parallel with the longitudinal direction of the printed circuit board 4, and is adjacent to a square pillar-shaped body 10a. The terminal pins 10b on one surface of the connection terminal 10 formed by arranging the terminal pins 10b in one row on one surface
It is inserted into the terminal pin hole 4a and connected to the printed wiring of the printed circuit board 4 by a method such as soldering. The terminal pins 10b on the other surface of the connection terminals 10 are inserted into the terminal pin holes 5a provided on the printed circuit board 5, and similarly connected to the printed wiring of the printed circuit board 5 by a method such as soldering. Notches 5b for engaging the fixing screws 11 are provided on both side ends of the printed circuit board 5, and the fixing screws 11 are provided in screw holes 3a provided inside the body 3.
Are screwed together to fix the printed circuit board 5 to the body 3.

An address setting switch 12 composed of six DIP switches 12a is mounted on the printed circuit board 6. Terminal pins 6a are arranged in a row on both sides of a surface opposite to the surface on which the address setting switch 12 is mounted. It is standing
The terminal pins 6a are inserted into terminal pin holes 5c provided in a row in parallel with both side ends of the printed board 5, and connected to the printed wiring of the printed board 5 by a method such as soldering.

The connection leads 13 for four loads for connection to the load L and the remote control breaker 31 for load control in FIG.
To the opening 2 so as to be bent toward the power supply line 14.
Is connected to the printed circuit board 4, and the power supply line 14 is led out on the opposite side of the printed circuit board 4 from the connection lead wire 13 and bent toward the opening 2. Then, two lead wires 15 for connecting the transmission line Ls are connected to the printed circuit board 5. As described above, the connection to the transmission line Ls and the load L is of a lead type, so that a short circuit due to dew condensation between terminals which occurs in a terminal type as in the conventional example can be prevented.

The cover 7 has an address setting switch 12
A window 7a for exposing the dip switch 12a is provided so that the dip switch 12a can be operated from above the cover 7. The cover 7 is provided with a hole 7b through which the connection lead 13 and the power supply line 14 connected to the printed board 4 and the lead 15 connected to the printed board 5 are inserted. An engagement piece 7c that engages with an engagement hole 3b provided on a pair of short sides of the opening 2 of the body 3 is formed on a pair of opposite short sides of the cover 7.
The engagement piece 7c is provided in the engagement hole 3b of the body 3.
, The opening 2 is sealed, and the cover 7 is further covered with a locking portion 3c protruding toward the opening 2 from the upper piece of the engaging hole 7c.
We keep from falling off.

In the above configuration, as shown in FIGS. 1 and 3, the interior of the body 3 is filled with the epoxy resin A. By filling the epoxy resin A from the bottom inside the body 3 to the line X shown in FIG. 3, the printed boards 4 to 6 on which the terminal circuit components are mounted are isolated from the outside air by the epoxy resin A. Adhesion of moisture due to dew condensation or the like to 4 to 6 can be prevented.

Next, an embodiment of the present invention will be described. The control terminal 16 in this embodiment is for one load control. This control terminal 16 is shown in FIGS.
As shown in (c), a partition plate 17 that divides the inside of the body 3 formed in the size of one module having a common size of the distribution board into the bottom side of the body 3 facing the opening 2 and the opening 2 side.
An engaging recess 17a is provided at the end of the body 3, and the engaging recess 17a is engaged with an engaging protrusion 3d provided on a side surface inside the body 3 to fix the partition plate 17 inside the body 3.

Printed circuit boards 18 and 19 are accommodated and fixed in a space between the partition plate 17 and the opening 2 inside the body 3 divided by the partition plate 17. Printed circuit board 18
A notch 18a for engaging the fixing screw 11
And is fixed to a screw hole 3 a provided inside the body 3 by a fixing screw 11. Also, the terminal pins 20b on one side of the connection terminals 20 formed by arranging the terminal pins 20b in a row on the two opposite sides of the body 20a formed in the shape of a quadrangular prism are attached to the printed circuit board 18 respectively. It is inserted into the terminal pin hole 18b provided at the end and connected to the printed wiring of the printed circuit board 18 by a method such as soldering. Further, the connection lead wire 13 and the power supply wire 14 are connected to the printed circuit board 18, and extend to the outside through a through hole 21 a provided in the cover 21.

On the other hand, the printed circuit board 19 has an address setting switch 12 comprising six dip switches 12a.
And a load number setting switch 22 including two dip switches 22a. In addition, terminal pin holes 19a are provided in a row at the end of the printed circuit board 19,
The terminal pin 20 of the connection terminal 20 is inserted into the terminal pin hole 19a.
b, and insert the printed circuit board 19 by a method such as soldering.
The terminal pin 20b is connected to the printed wiring. The printed circuit board 19 has a lead wire 1 for the transmission line Ls.
5, two through holes 21 provided in the cover 21
a.

The cover 21 has an address setting switch 1
Window 21b for exposing the DIP switch 12a and the DIP switch 22a so that the DIP switch 12a and the DIP switch 22a of the load number setting switch 22 can be respectively operated from above the cover 21.
Is provided. The configuration of the cover 21 and the method of fixing the cover 21 to the body 3 other than those described above are the same as those in the above-described basic example, and a description thereof will be omitted.

In the above configuration, as shown in FIG. 6, the partition plate 17 inside the body 3 divided by the partition plate 17 is provided.
The space between the opening and the opening 2 is filled with the epoxy resin A.
By filling the epoxy resin A from the partition plate 17 inside the body 3 to the line Y shown in FIG. 6, the printed circuit boards 18 and 19 on which the terminal circuit components are mounted become the epoxy resin A.
The printed circuit boards 18, 19
Can be prevented from adhering to the water due to condensation or the like.

[0027]

According to the first aspect of the present invention, an operation terminal and a control terminal each having a different address are connected to a transmission processing device via a two-wire transmission line by a time division multiple access method, and transmission is performed. The processing device individually accesses the operation terminal and the control terminal by transmitting a transmission signal including address data to the transmission line, and transmits the transmission signal including the address data from the operation terminal during the signal return period set in synchronization with the transmission signal. When the operation data is received, the control data is generated based on the operation data, and the control data is transmitted to the control terminal in which the correspondence between the operation terminal that generated the operation data and the address is set in advance. Used in a remote monitoring and control system that controls the operation of an operation terminal, the inside of a body that has an opening and is formed in a substantially box shape, with the bottom side of the body facing the opening and the opening
A partition plate is provided on the side of the partition and between the partition plate and the opening.
The printed circuit board is stored and fixed in the empty space.
And the opening is sealed with a cover, so the printed circuit board is waterproof and dampproof with resin.
Even when it is used outdoors, it may be damaged by rainwater or condensation.
The terminal circuit components mounted on the lint board are short-circuited.
Can be prevented, and between the partition plate and the opening.
Resin filling only in vacant spaces saves resin filling
There is an effect that is Ru can be.

[0028]

According to the second aspect of the present invention, since the connecting portion for connecting the load to be controlled and the connecting portion for connecting the transmission line are formed of lead wires, when the control terminal is installed outdoors, the connection between the connecting portions is reduced. Can be prevented from being short-circuited due to condensation.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a basic example of the present invention .

FIG. 2 shows the same as the above, (a) is a plan view,
(B) is a front view, (c) is a side view.

FIG. 3 shows the same as above, and is a sectional view taken along the line OO of FIG. 2 (b).

FIG. 4 is an exploded perspective view showing an embodiment of the present invention .

FIG. 5 shows the same as above, (a) is a plan view,
(B) is a front view, (c) is a side view.

6 shows the same as above, and is a cross-sectional view taken along the line P-P in FIG. 5 (b).

FIG. 7 is a schematic configuration diagram of a conventional remote monitoring control system.

FIG. 8 is an operation explanatory diagram of a conventional remote monitoring control system.

FIG. 9 is an external view showing a conventional example.

FIG. 10 is an external view showing another conventional example.

FIG. 11 is a sectional view of a pole in which a conventional control terminal is installed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Control terminal 2 Opening 3 Body 4-6 Printed circuit board 7 Cover 10 Connection terminal 12 Address setting switch 13 Connection lead wire 14 Power supply wire 15 Lead wire A Epoxy resin

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-3-48498 (JP, A) JP-A-1-75979 (JP, U) JP-A-61-27287 (JP, U) (58) Survey Field (Int.Cl. ⁷ , DB name) H04Q 9/00-9/16

Claims (2)

(57) [Claims] An operation terminal and a control terminal each having an individual address are connected to a transmission processing device via a two-wire transmission line in a time division multiple access system, and the transmission processing device transmits address data. The operation terminal and the control terminal are individually accessed by transmitting the transmission signal including the transmission signal to the transmission line, and the operation is performed when the operation data from the operation terminal is received during the signal return period set in synchronization with the transmission signal. The control data is generated based on the data, and the control data is transmitted to the control terminal in which the correspondence between the operation terminal that generated the operation data and the address is set in advance to control the operation of the control terminal. Used for remote monitoring and control systems that control the interior of a substantially box-shaped body with an opening
A partition that separates the bottom of the body facing the mouth from the opening
Provide a cutting board, and print base in the space between the partition and the opening.
A terminal for controlling a remote monitoring and control system, wherein a board is stored and fixed, a space between the partition plate and the opening is filled with resin, and the opening is sealed with a cover. 2. A connection part for connecting a load to be controlled and a transmission.
2. The terminal for control of a remote monitoring and control system according to claim 1, wherein the connecting part for connecting the transmission line is constituted by a lead wire .